September 4, 2018 at 11:50 ammohamedhSubscriber
I am using ANSYS FLUENT to model a two-phase flow of liquid and gas using the Eulerian model where the surface tension force is included.
In the theory of the VOF model, the surface tension force is added to the momentum equation as a source term. However, in the Eulerian model, we have two momentum equations, one for the liquid and one for the gas.
How is the surface tension force included? is it added to the liquid momentum equation?is it added to the gas momentum equation? is it split between the two phases? If it is split, is it split by two volume averaged factors or two mass averaged factors?
Unfortunately, the theory manual does not mention related information under the Eulerian model theory.
September 4, 2018 at 1:10 pmDrAmineAnsys Employee
Give me some more time for reflection and I will get back to you!
September 4, 2018 at 2:26 pmmohamedhSubscriber
Thanks for your interest. I would be very thankful for you if you could help me.
September 4, 2018 at 2:55 pmDrAmineAnsys Employee
It is just multiplied with the volume fraction of the phase and applied for each momentum equation set of each phase. So if you add both momentum equations set for two phase flows you will end up with the source term applied for the bulk (like in VOF method). Please bear in mind that as ANSYS Stuff I cannot provide more information about the implementation on this open community.
September 4, 2018 at 3:07 pm
- You must be logged in to reply to this topic.
Earth Rescue – An Ansys Online Series
The climate crisis is here. But so is the human ingenuity to fight it. Earth Rescue reveals what visionary companies are doing today to engineer radical new ideas in the fight against climate change. Click here to watch the first episode.
Subscribe to the Ansys Blog to get great new content about the power of simulation delivered right to your email on a weekly basis. With content from Ansys experts, partners and customers you will learn about product development advances, thought leadership and trends and tips to better use Ansys tools. Sign up here.
- Suppress Fluent to open with GUI while performing in journal file
- Floating point exception in Fluent
- What are the differences between CFX and Fluent?
- Heat transfer coefficient
- Getting graph and tabular data from result in workbench mechanical
- The solver failed with a non-zero exit code of : 2
- Difference between K-epsilon and K-omega Turbulence Model
- Time Step Size and Courant Number
- Mesh Interfaces in ANSYS FLUENT
- error in cfd post
© 2023 Copyright ANSYS, Inc. All rights reserved.